Department of Mysteries Locked Room

[glavgirl]

No: HPFGUIDX 117442


Glavgirl:

Wanted to get your thoughts on the locked room in Department of 
Mysteries.  When Harry is trying to find the right door to enter, he 
goes to the locked door and tries everything to open it.  It was odd 
that it melted the knife that Sirius had given him.  In the end of 
the book, Dumbledore told Harry that there was a locked room in the 
Department of Mysteries that holds that power that Harry possess.  We 
know it was his heart that kept Voldemort from possessing him for any 
amount of time.  Any ideas on what "power" is behind the locked 
door?  It would be hard to lock up feelings in a room.  Especially 
something that would melt a knife.